The best replacement for azure is aws.

The best alternatives to azure are rated as following:
★★★★★  aws
★★★★  ec2
★★★  s3
★★★  rackspace
★★  amazon cloud
★★  aws pricing
★★  rich plagioclase
★★  appharbor
★★  amazon ec2
★  heroku
★  parse
★  gaikai
★  amazon
★  ec2 pricing
★  app engine
★  google app engine
  dedicated server
  sql server
  cyan
  vcloud
  google cloud
  digitalocean
  indigo
  vchs
  amazon aws
  force.com

Your alternative for azure is not listed? Suggest!
Speaking about azure, one probably shouldn't forget about msdn.

Other search terms related to azure and their ratings are:
★★★★★ msdn
★ adfs
You have in mind a companion for azure and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of azure in all years. Click on graph for more.
azure
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